Radiographic imaging system, radiographic imaging apparatus, and inspection method for inspecting radiographic imaging apparatus

Abstract

A radiographic imaging system including a radiographic imaging apparatus having a pixel array including a dose detection region where dose detection pixels for outputting signals to be used to detect a dose of emitted radiation is provided, based on position information regarding positions in the dose detection region of defective pixels among the dose detection pixels, determines whether radiographic imaging involving the detection of the dose of the radiation can be normally performed.

What is claimed is: 
     
         1 . A radiographic imaging system including a radiographic imaging apparatus having a pixel array, the pixel array including a dose detection region where a plurality of dose detection pixels for outputting signals to be used to detect a dose of emitted radiation is provided, the radiographic imaging system comprising:
 a determination unit configured to, based on position information regarding positions in the dose detection region of at least either one or more normal pixels or one or more defective pixels among the plurality of dose detection pixels, determine whether radiographic imaging involving the detection of the dose of the radiation can be normally performed.   
     
     
         2 . The radiographic imaging system according to  claim 1 ,
 wherein the position information is a deviation between a geometric center of the dose detection region and a geometric center of the one or more normal pixels in the dose detection region, and   wherein the determination unit makes the determination by comparing the deviation and a criterion value determined in advance.   
     
     
         3 . The radiographic imaging system according to  claim 1 ,
 wherein the position information is a deviation between a geometric center of the dose detection region and a geometric center of the one or more defective pixels in the dose detection region, and   wherein the determination unit makes the determination by comparing the deviation and a criterion value determined in advance.   
     
     
         4 . The radiographic imaging system according to  claim 1 ,
 wherein the dose detection region includes a plurality of sub-regions obtained by further dividing the dose detection region,   wherein the position information is the number of the one or more normal pixels included in each of the plurality of sub-regions, and   wherein the determination unit makes the determination by comparing the number of the one or more normal pixels and a criterion value determined in advance.   
     
     
         5 . The radiographic imaging system according to  claim 1 ,
 wherein the dose detection region includes a plurality of sub-regions obtained by further dividing the dose detection region,   wherein the position information is the number of the one or more defective pixels included in each of the plurality of sub-regions, and   wherein the determination unit makes the determination by comparing the number of the one or more defective pixels and a criterion value determined in advance.   
     
     
         6 . The radiographic imaging system according to  claim 1 ,
 wherein the dose detection region includes a plurality of sub-regions obtained by further dividing the dose detection region,   wherein the position information is a dispersion or a standard deviation of coordinates of the one or more normal pixels included in each of the plurality of sub-regions, and   wherein the determination unit makes the determination by comparing the dispersion or the standard deviation and a criterion value set in advance.   
     
     
         7 . The radiographic imaging system according to  claim 1 ,
 wherein the dose detection region includes a plurality of sub-regions obtained by further dividing the dose detection region,   wherein the position information is a dispersion or a standard deviation of coordinates of the one or more defective pixels included in each of the plurality of sub-regions, and   wherein the determination unit makes the determination by comparing the dispersion or the standard deviation and a criterion value set in advance.   
     
     
         8 . The radiographic imaging system according to  claim 1 , wherein the pixel array further includes image output pixels for generating charges according to the radiation to generate radiographic image data, and the dose detection pixels and the image output pixels are arranged in an array. 
     
     
         9 . A radiographic imaging apparatus having a pixel array, the pixel array including a dose detection region where a plurality of dose detection pixels for outputting signals to be used to detect a dose of emitted radiation is provided, the radiographic imaging apparatus comprising:
 a determination unit configured to, based on position information regarding positions in the dose detection region of at least either one or more normal pixels or one or more defective pixels among the plurality of dose detection pixels, determine whether radiographic imaging involving the detection of the dose of the radiation can be normally performed.   
     
     
         10 . A control device that controls a radiographic imaging system including a radiographic imaging apparatus having a pixel array, the pixel array including a dose detection region where a plurality of dose detection pixels for outputting signals to be used to detect a dose of emitted radiation is provided, the control device comprising:
 a determination unit configured to, based on position information regarding positions in the dose detection region of at least either one or more normal pixels or one or more defective pixels among the plurality of dose detection pixels, determine whether radiographic imaging involving the detection of the dose of the radiation can be normally performed.   
     
     
         11 . An inspection method for inspecting a radiographic imaging apparatus having a pixel array, the pixel array including a dose detection region where a plurality of dose detection pixels for outputting signals to be used to detect a dose of emitted radiation is provided, the inspection method comprising:
 based on position information regarding positions in the dose detection region of at least either one or more normal pixels or one or more defective pixels among the plurality of dose detection pixels, determining whether radiographic imaging involving the detection of the dose of the radiation can be normally performed.   
     
     
         12 . A computer-readable storage medium storing a program for causing a computer to execute an inspection method for inspecting a radiographic imaging apparatus having a pixel array, the pixel array including a dose detection region where a plurality of dose detection pixels for outputting signals to be used to detect a dose of emitted radiation is provided, the inspection method comprising:
 based on position information regarding positions in the dose detection region of at least either one or more normal pixels or one or more defective pixels among the plurality of dose detection pixels, determining whether radiographic imaging involving the detection of the dose of the radiation can be normally performed.